Rules that determines which ions to discharge based on the Electrochemical Series. Form 4 Chapter 6 Electrochemistry. Hope this can help every student.
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Form 4 Chapter 6 Chemistry: Electrochemical Series
1. Rules to discharge in Electrochemical Series
Cations Anions
K+
Na+
Ca2+
Mg2+
Al3+
Zn2+
Fe2+
Sn2+
Pb2+
H+
Cu2+
Ag+
F-
SO4
2-
NO3
-
Cl-
Br-
I-
OH-
Discharge in
molten
electrolyte
Discharge in
concentrated
electrolyte
Discharge in
diluted
electrolyte
without Cu2+
& Ag+
Discharge in
all type of
electrolyte
Discharge in
molten
electrolyte
Discharge in
concentrated
electrolyte
Discharge in
diluted
electrolyte
with
presence of
F-, SO4
2 &
NO3
-